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RECEIVE DIAGNOSTIC RESULTS 1Ch
6.14. READ BLOCK LIMITS 05h
Bit
7
Byte
0
1
2
3
4
5
The READ BLOCK LIMITS command tells the drive to return its limits for Block Length. The READ BLOCK LIMITS
data shown below will be sent during the DATA IN phase of the command. The command does not reflect the
currently selected block size, only the available limits. MODE SENSE returns the current block size. 2 bytes is the
minimum and 8 Mbytes - 1 byte is the maximum block size which the unit can support.
Bit
7
Byte
0
Reserved
1
(MSB)
2
3
4
(MSB)
5
GRANULARITY: This field indicates the block size granularity of the Logical Unit and the recording format. For this
Logical Unit, the value is 2, indicating a granularity of 2**GRANULARITY.
The maximum block length limit and minimum block length limit field values are shown in Table 6-69.
SONY AIT-4 drive SDX-900V series Ver.2.1
6
5
Operation Code (05h)
Obsolete
Table 6-69: READ BLOCK LIMITS Data
6
5
Maximum Block Length Limit (FF FF FCh)
Minimum Block Length Limit (00 04h)
4
3
2
Reserved
Reserved
Reserved
Reserved
Control
4
3
2
Granularity(02h)
6.Command Specification
1
0
1
0
(LSB)
(LSB)
6-71
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